Respuesta :
Answer:
Ethylene glycol has a higher boiling point because it has more hydroxyl groups, and thus will form more H-bonds.
Explanation:
Generally, we say that the boiling point increases with higher molecular mass, because of increase of Van der waals forces.
In this case, we see that ethylene glycol has a lower molecular mass but higher boiling point.
The reason for this can be explained, when we look at the structure of both butanol and ethylene glycol.
Butanol has 1 hydroxyl-group, while ethylene glycol has 2 hydroxyl- groups.
Since ethylene glycol has more hydroxyl groups, it can also create more H-bonds.
The higher the amount of H-bounds the higher the boiling point. So ethylene glycol has a higher boiling point because it has more hydroxyl groups, and thus will form more H-bonds.
